US6693264B2 - Vacuum and gas tight enclosure for induction heating system - Google Patents
Vacuum and gas tight enclosure for induction heating system Download PDFInfo
- Publication number
- US6693264B2 US6693264B2 US10/122,135 US12213502A US6693264B2 US 6693264 B2 US6693264 B2 US 6693264B2 US 12213502 A US12213502 A US 12213502A US 6693264 B2 US6693264 B2 US 6693264B2
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- US
- United States
- Prior art keywords
- sheath
- chamber
- tubes
- vacuum
- gastight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 30
- 230000006698 induction Effects 0.000 title description 20
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000011159 matrix material Substances 0.000 claims abstract description 12
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 8
- 239000011810 insulating material Substances 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 230000004907 flux Effects 0.000 claims description 19
- 239000000919 ceramic Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 238000009730 filament winding Methods 0.000 claims description 2
- 239000005340 laminated glass Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 239000002826 coolant Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 239000012809 cooling fluid Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005269 aluminizing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/22—Furnaces without an endless core
- H05B6/24—Crucible furnaces
- H05B6/26—Crucible furnaces using vacuum or particular gas atmosphere
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/60—Continuous furnaces for strip or wire with induction heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/04—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
- F27B9/062—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated electrically heated
- F27B9/067—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated electrically heated heated by induction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/28—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/36—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/0003—Linings or walls
- F27D1/0033—Linings or walls comprising heat shields, e.g. heat shieldsd
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/12—Arrangement of elements for electric heating in or on furnaces with electromagnetic fields acting directly on the material being heated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D5/00—Supports, screens, or the like for the charge within the furnace
- F27D5/0062—Shields for the charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
- F27D2007/063—Special atmospheres, e.g. high pressure atmospheres
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/0002—Cooling of furnaces
- F27D2009/0018—Cooling of furnaces the cooling medium passing through a pattern of tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0006—Electric heating elements or system
- F27D2099/0015—Induction heating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Definitions
- the present invention relates to heating a metal product advancing continuously in a protective atmosphere or in a vacuum, by electromagnetic induction.
- induction heating devices are used for these plants, namely one with a longitudinal flux (the inductor consists of several turns through which current passes and which surround the advancing product so as to create a magnetic flux in the direction of advance of the product) and one with a transverse flux (the turns of the inductor are placed in a plane parallel to the surface of the product such that the magnetic flux is perpendicular to this surface).
- induction with a longitudinal flux is generally suitable for magnetic products whose temperature is required to be in the vicinity of 750° C. (Curie point) whilst induction with a transverse flux is more suitable for heating at a higher temperature, especially for non-magnetic products.
- the induction heating must be carried out under a protective atmosphere, such as a mixture of hydrogen and nitrogen.
- a protective atmosphere such as a mixture of hydrogen and nitrogen.
- induction heating devices are used in a protective atmosphere, in which the heating device is placed directly inside the sealed chamber.
- the seal is therefore then made all around the induction means, which presents many drawbacks, especially during operations of maintaining these inductors, which require the chamber to be dismantled, or for sealing the passages for the inflow and return of electric current supplying the inductors and for those of the water circuits cooling the latter.
- the sealed chamber in its central part enclosed by the actual induction means, consists of a sleeve comprising one or more layers of thermally and electrically insulating fabric and coated with a gastight film able to withstand a temperature of at least 100° C. but never exceeding 750° C. (device operating by induction with a longitudinal flux).
- the present invention therefore aims to overcome such drawbacks by providing an electrically insulating (that is to say transparent to the magnetic flux) gastight and vacuum-tight chamber coupled to a thermally insulating shield which makes it possible to protect the induction means and any magnetic circuit of the electromagnetic induction heating device, and this regardless of how the latter operates (longitudinal flux or transverse flux).
- this gastight and vacuum-tight chamber is placed around the advancing product to be heated, between the latter and the induction heating means.
- the gastight and vacuum-tight chamber according to the invention intended to be used in a device for heating a product advancing inside the said chamber by electromagnetic induction is characterized in that it comprises, at least in its central part surrounded by the said induction heating means, a sheath made of an electrically insulating gastight and vacuum-tight material, the inner faces of the said sheath being protected by a heat shield consisting of a matrix of tiles made of a thermally insulating material and of a plurality of tubes cooled by the flow of a fluid, the latter being trapped in the said matrix of tiles.
- the role of the heat shield is to ensure a temperature close to 100° C. for the material forming the sheath, while the product to be heated is at a temperature of about 1200° C.
- FIG. 1 is a view in cross section of the chamber according to the invention.
- FIG. 2 is a partial enlarged view of a detail of FIG. 1;
- FIG. 3 is a view in section along III—III of FIG. 1;
- FIG. 4 is a partial view in section along IV—IV of a detail of FIG. 3;
- FIG. 5 is a schematic view illustrating part of a heat treatment plant comprising a chamber according to the invention.
- the electrically insulating gastight and vacuum-tight chamber according to the invention is in the form of an elongated sheath 1 coupled to a heat shield 2 .
- the space 3 defined inside the said sheath is shaped according to the shape of the product to be treated.
- the parallelepipedal shaped sheath illustrated in FIGS. 1 to 4 typically represents an application of this device to a strip to be treated.
- this type of chamber can also be applied to any other product, whether or not it is advancing (wire made of steel, copper, aluminium, etc.).
- the sheath 1 is therefore intended to surround the advancing product to be treated and is placed between the latter and the induction means of the heating device. It may extend over the entire height of the induction means, but preferably a sheath extending beyond these inductors, upstream and downstream thereof, will be chosen so that the end pieces are not heated by the return of the induction flux.
- the usual gastight and vacuum-tight means are provided, respectively at the inlet and at the outlet of the sheath, at the ends of the latter by which the strip to be heated enters and exits in a continuous movement.
- These conventional design means have not been shown in the drawings.
- the sheath 1 according to the invention is made from a material transparent to the magnetic flux, therefore electrically insulating.
- the said sheath is made by filament winding of epoxy resin or a similar material.
- the sheath 1 Since the space 3 inside the said sheath is filled with a protective atmosphere (generally consisting of a mixture of nitrogen and of hydrogen) making it possible to prevent any oxidation of the product during the treatment thereof, it is therefore necessary that the sheath 1 is gastight and also vacuum-tight.
- a protective atmosphere generally consisting of a mixture of nitrogen and of hydrogen
- the sheath must also be electrically non-conducting so that it is not the origin of current induced by the induction flux.
- the heat shield 2 consisting of a plurality of tubes 4 trapped in a matrix of tiles 5 made of ceramic or a similar material, as described below.
- the heat shield 2 consists of an assembly of a plurality of tubes 4 placed on all the inner faces of the sheath 1 and through which a fluid, in particular water, flows so as to cool the sheath.
- the said cooling tubes are uniformly distributed over all the inner faces of the sheath 1 .
- the tubes 4 preferably consist of stainless steel of small thickness (about 0.5 mm) and they form a plurality of hairpin bends (coiled configuration). These tubes may also be made from a material which is electrically insulating, therefore transparent to the magnetic flux, for example glass or epoxy-glass.
- a matrix of tiles 5 made of ceramic or other equivalent insulating materials is placed between each cooling tube 4 so as to cut off the heat radiation from the product to be treated.
- the said tiles have a particular geometric shape such that they can fit onto or between the tubes 4 and thus form a matrix trapping the latter, and so that the said tubes are not directly facing the advancing product.
- the material forming the tiles 5 (ceramic, concrete, etc.) is a very good thermal insulator, the tiles will thus cut off the heat flux radiated by the heated product.
- the small amount of heat radiated by the said product arriving at the tubes 4 trapped in the said tiles 5 may be extracted by heat exchange with the cooling fluid flowing in the said tubes.
- the heat shield 2 consisting of the assembly of tubes 4 and of tiles 5 is mechanically attached to the inner face of the sheath 1 by means of screws 6 or similar attachment means.
- a laminated glass sheet 7 (for example having a thickness of about 3 mm) is inserted between this heat shield and the sheath 1 , thus facilitating the placement and therefore the attachment of the tubes 4 and tiles 5 to the said sheath, the said laminated sheet 7 itself being placed between two thin layers 8 and 9 of fabric made of ceramic or a similar material.
- the plant is designed for heating an advancing stainless steel strip under a protective atmosphere with a high hydrogen content.
- This type of heat treatment typically requires a heating temperature of about 1150° C.
- a device for heating by electromagnetic induction as shown in FIG. 5, is used.
- This heating device comprises at least one coil 10 , through which current passes, which is placed in a plane parallel to the surface of the advancing strip 11 to be treated such that the transverse magnetic flux is perpendicular to the large surface of the said strip. Furthermore, a chamber 12 according to the invention, as described above, is placed around the strip, between the latter and the coils 10 and preferably lies in a plane perpendicular to the direction of advance of the said strip, upstream and downstream of the turns of the said coils.
- this chamber makes it possible to carry out a dual function: it plays the role of a gastight (or vacuum-tight) box needed for treating the strip, and it makes it possible to protect the said sheath efficiently.
- This chamber also makes it possible to intervene directly in the induction coils (especially during the maintenance thereof) without having to break the seal of the said chamber.
- the chamber according to the invention is thus perfectly suitable for any plant using a protective atmosphere, or operating in a vacuum.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Electromagnetism (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- General Induction Heating (AREA)
- Furnace Details (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Coating With Molten Metal (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
Description
Claims (11)
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0103044A FR2821925B1 (en) | 2001-03-06 | 2001-03-06 | THERMAL INSULATION GAS AND VACUUM ENCLOSURE FOR AN INDUCTION HEATING DEVICE |
AT02290769T ATE296528T1 (en) | 2001-03-06 | 2002-03-27 | VACUUM AND GAS TIGHT CONTAINER FOR THERMAL INSULATION OF INDUCTION HEATING DEVICES |
EP02290769A EP1349431B1 (en) | 2001-03-06 | 2002-03-27 | Vacuum and gas tight thermal insulating enclosure for induction heating apparatus |
DE0001349431T DE02290769T1 (en) | 2001-03-06 | 2002-03-27 | Vacuum and gas-tight container for the thermal insulation of induction heating devices |
TR200400173T TR200400173T3 (en) | 2001-03-06 | 2002-03-27 | Gas impermeable and vacuum protective heat insulation chamber for induction heating device |
ES02290769T ES2212929T3 (en) | 2001-03-06 | 2002-03-27 | GAS AND EMPTY WATERPROOF SEALING ENCLOSURE FOR AN INDUCTION HEATING DEVICE. |
DE60204279T DE60204279T2 (en) | 2001-03-06 | 2002-03-27 | Vacuum and gas tight container for thermal insulation of induction heating |
CA2380812A CA2380812C (en) | 2001-03-06 | 2002-04-10 | Enclosure impervious to gas and to vacuum providing thermal insulation for use with an induction heating device |
US10/122,135 US6693264B2 (en) | 2001-03-06 | 2002-04-15 | Vacuum and gas tight enclosure for induction heating system |
JP2002115200A JP4085307B2 (en) | 2001-03-06 | 2002-04-17 | Insulating gas sealed and vacuum sealed chamber for induction heating apparatus |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0103044A FR2821925B1 (en) | 2001-03-06 | 2001-03-06 | THERMAL INSULATION GAS AND VACUUM ENCLOSURE FOR AN INDUCTION HEATING DEVICE |
EP02290769A EP1349431B1 (en) | 2001-03-06 | 2002-03-27 | Vacuum and gas tight thermal insulating enclosure for induction heating apparatus |
CA2380812A CA2380812C (en) | 2001-03-06 | 2002-04-10 | Enclosure impervious to gas and to vacuum providing thermal insulation for use with an induction heating device |
US10/122,135 US6693264B2 (en) | 2001-03-06 | 2002-04-15 | Vacuum and gas tight enclosure for induction heating system |
JP2002115200A JP4085307B2 (en) | 2001-03-06 | 2002-04-17 | Insulating gas sealed and vacuum sealed chamber for induction heating apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
US20030192878A1 US20030192878A1 (en) | 2003-10-16 |
US6693264B2 true US6693264B2 (en) | 2004-02-17 |
Family
ID=30119352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/122,135 Expired - Lifetime US6693264B2 (en) | 2001-03-06 | 2002-04-15 | Vacuum and gas tight enclosure for induction heating system |
Country Status (9)
Country | Link |
---|---|
US (1) | US6693264B2 (en) |
EP (1) | EP1349431B1 (en) |
JP (1) | JP4085307B2 (en) |
AT (1) | ATE296528T1 (en) |
CA (1) | CA2380812C (en) |
DE (2) | DE60204279T2 (en) |
ES (1) | ES2212929T3 (en) |
FR (1) | FR2821925B1 (en) |
TR (1) | TR200400173T3 (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030233314A1 (en) * | 2001-11-14 | 2003-12-18 | Christopher Kokis | General montage layout |
US20060186800A1 (en) * | 2005-02-23 | 2006-08-24 | Electromagnetics Corporation | Compositions of matter: system II |
US20070125767A1 (en) * | 2005-12-06 | 2007-06-07 | Jibb Richard J | Magnetic annealing tool heat exchange system and processes |
WO2007106094A1 (en) * | 2006-03-16 | 2007-09-20 | Electromagnetics Corporation | Compositions of matter: system ii |
KR100813083B1 (en) * | 2002-04-17 | 2008-03-14 | 셀레스 | Thermally insulating gastight and vacuum-tight chamber intended for an induction heating device |
US20090010627A1 (en) * | 2007-07-05 | 2009-01-08 | Baxter International Inc. | Dialysis fluid heating using pressure and vacuum |
US20090194258A1 (en) * | 2006-01-04 | 2009-08-06 | Fives Celes | Thermal isolation screen for isolating an electromagnetic inductor, and heat treatment installation comprising such a screen |
US20100092666A1 (en) * | 2006-12-25 | 2010-04-15 | Tokyo Electron Limited | Film deposition apparatus and film deposition method |
US9445460B2 (en) | 2008-04-14 | 2016-09-13 | Inductotherm Corp. | Variable width transverse flux electric induction coils |
US9790574B2 (en) | 2010-11-22 | 2017-10-17 | Electromagnetics Corporation | Devices for tailoring materials |
CN108025364A (en) * | 2015-06-05 | 2018-05-11 | 派洛珍尼西斯加拿大公司 | For with the plasma apparatus of high production capacity production high-quality spherical powder |
US20200016317A1 (en) * | 2003-11-05 | 2020-01-16 | Baxter International Inc. | Dialysis system having inductive heating |
US10688564B2 (en) | 2014-03-11 | 2020-06-23 | Tekna Plasma Systems Inc. | Process and apparatus for producing powder particles by atomization of a feed material in the form of an elongated member |
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US11638958B2 (en) | 2014-03-11 | 2023-05-02 | Tekna Plasma Systems Inc. | Process and apparatus for producing powder particles by atomization of a feed material in the form of an elongated member |
US10688564B2 (en) | 2014-03-11 | 2020-06-23 | Tekna Plasma Systems Inc. | Process and apparatus for producing powder particles by atomization of a feed material in the form of an elongated member |
US11059099B1 (en) | 2014-03-11 | 2021-07-13 | Tekna Plasma Systems Inc. | Process and apparatus for producing powder particles by atomization of a feed material in the form of an elongated member |
US11110515B2 (en) | 2014-03-11 | 2021-09-07 | Tekna Plasma Systems Inc. | Process and apparatus for producing powder particles by atomization of a feed material in the form of an elongated member |
US11951549B2 (en) | 2014-03-11 | 2024-04-09 | Tekna Plasma Systems Inc. | Process and apparatus for producing powder particles by atomization of a feed material in the form of an elongated member |
US11565319B2 (en) | 2014-03-11 | 2023-01-31 | Tekna Plasma Systems Inc. | Process and apparatus for producing powder particles by atomization of a feed material in the form of an elongated member |
CN108025364A (en) * | 2015-06-05 | 2018-05-11 | 派洛珍尼西斯加拿大公司 | For with the plasma apparatus of high production capacity production high-quality spherical powder |
US11198179B2 (en) | 2015-07-17 | 2021-12-14 | Ap&C Advanced Powders & Coating Inc. | Plasma atomization metal powder manufacturing processes and system therefor |
US11235385B2 (en) | 2016-04-11 | 2022-02-01 | Ap&C Advanced Powders & Coating Inc. | Reactive metal powders in-flight heat treatment processes |
US11794247B2 (en) | 2016-04-11 | 2023-10-24 | AP&C Advanced Powders & Coatings, Inc. | Reactive metal powders in-flight heat treatment processes |
Also Published As
Publication number | Publication date |
---|---|
CA2380812C (en) | 2014-08-12 |
ES2212929T1 (en) | 2004-08-16 |
TR200400173T3 (en) | 2004-04-21 |
DE60204279T2 (en) | 2006-03-02 |
DE60204279D1 (en) | 2005-06-30 |
FR2821925B1 (en) | 2003-05-16 |
JP4085307B2 (en) | 2008-05-14 |
CA2380812A1 (en) | 2003-10-10 |
EP1349431B1 (en) | 2005-05-25 |
ATE296528T1 (en) | 2005-06-15 |
ES2212929T3 (en) | 2005-09-16 |
FR2821925A1 (en) | 2002-09-13 |
US20030192878A1 (en) | 2003-10-16 |
JP2003317912A (en) | 2003-11-07 |
EP1349431A1 (en) | 2003-10-01 |
DE02290769T1 (en) | 2004-07-08 |
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